I think the time slot change thing is all speculation since the ratings have been down this season. I think there's a possibility they'll move the show for the fall, but maybe not. It's recovered in the ratings a bit and is similar in the demo to CSI and Elementary (although it gets fewer total viewers), and it's above Vegas.
Meh, the 3/18 episode sounds... okay. Really, for me, I don't care so much what the case is about as long as there's good Steve and Danno banter. My favorite episodes are probably the Danno ones, but as long as the guys are bickering--or cuddling on the couch
Speaking of banter, I watched the rerun of the Steve and Danno boat ep on Monday night. It's one of my favs. Their bickering always cracks me up.